A leaked packaging picture suggests that ASUS B660 motherboards might lack PCIe Gen 5 support & only run PCIe Gen 4 with Intel Alder Lake.
New Z790 motherboards from ROG pave the way for next-gen Intel Core CPUs
New Z790 motherboards from ROG pave the way for next-gen Intel Core CPUs
AMD Intros Zen 4 Ryzen 7000 CPUs and 600-Series Chipset: Up to 5.5 GHz, 15%+ Performance, RDNA 2 iGPUs, PCIe 5, DDR5 : r/hardware
ASUS ROG Strix B660-I Gaming WiFi LGA 1700(Intel 12th Gen) Mini-ITX Motherboard(PCIe 5.0, 8+1 Power Stages, DDR5,WiFi 6,2.5 Gb LAN, 2xM.2 PCIe 4.0 NVMe SSD Support, USB 3.2 Gen 2x2 Type-C)
ASUS ROG Strix B660-i Mini ITX Motherboard Review - Board Layout and Features Continued
ROG STRIX B660-I GAMING WIFI Gaming motherboards|ROG - Republic of Gamers|ROG Global
PRIME B660-PLUS D4|Motherboards|ASUS USA
Intel B660 Motherboards May Not Support PCIe 5.0 –
Asus's latest Intel gaming motherboard might be leaving PCIe Gen5 support in the dust
ASUS B660 Leak Hints Mainstream Alder Lake Motherboards May Not Support PCIe Gen 5
Intel LGA 1700 socket: Ready for 12th Gen Intel Core, Pentium Gold and Celeron processors Optimal Power Solution: 8+1 power stages with ProCool power
ASUS ROG Strix B660-I Gaming WiFi LGA 1700(Intel 12th Gen) Mini-ITX Motherboard(PCIe 5.0, 8+1 Power Stages, DDR5,WiFi 6,2.5 Gb LAN, 2xM.2 PCIe 4.0